Lydart, I know they moved stone about but usually for a specific purpose, such as the bluestones at Stonehenge. However, my point was to query if the sandstone of the door jambs matched the colour of sandstone available in the general area. If it does, then it is possible that it was quarried fairly close and it might be possible to find the quarry, and thus we could assume that the original building from which it was taken might be fairly close.